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  Delta-spotted Spiketail
            Cordulegaster diastatops (Selys, 1854)

Species distribution map

Range & Habitat:

Has been recorded in scattered locations around the state which may indicate spotty distribution or a lack of complete censusing.

Small streams, seeps and trickles, usually larger than Tiger or Arrowhead Spiketail habitat but absent from the larger streams and small rivers where Twin-spotted is found.

Delta-spotted Spiketail male dorsal 

Click on the thumbnails to enlarge additional photos. 

Description:

Black or dark brown, with prominent yellow thoracic stripes and large arrow or delta shaped yellow lateral spots on the abdomen.  Twin-spotted Spiketail also has pairs of spots, but they are smaller and located dorsally, nearly touching.  Arrowhead Spiketail has a single row of arrow shaped dorsal spots.

River Cruisers have a single lateral thoracic stripe and different behavior.

 

Conservation Status:

State: S3S4 - Apparently secure but should be watched

Global: G5 - Secure globally, but possibly rare in parts of its range

For a full explanation of the ranks, click here

Flight season:

Early Date: 4/21
Late Date: 7/8

Please scroll down for monthly graph.

 

Flight Season

(hover your mouse over the bar for actual data)
 
Number of Records
18 
1 4 18 1
J F M A M J J A S O N D

Months

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Click here for acknowledgments
Date, distribution, and status data courtesy of Allen Barlow, NJOS

© 2006 Jim Bangma, NJOS  Comments or suggestions?  Use the Feedback Form